Adaptive control of systems with nonsmooth input and output nonlinearities

Author

Tao, Gang

Author_Institution

Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA

Volume

41

Issue

9

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

1348

Lastpage

1352

Abstract

Adaptive control schemes are developed for plants with unknown nonsmooth nonlinearities at both the input and output of a linear dynamics. New controller parameterizations with nonlinearity inverses for parameterized nonlinearities are employed. When implemented with true parameters and properly initialized, the inverse controller ensures closed-loop signal boundedness and output tracking. Adaptive laws are designed to update the parameter estimates to implement adaptive inverse controllers for unknown nonlinearities in two cases: the linear part known and the linear part unknown

Keywords

adaptive control; control nonlinearities; control system synthesis; discrete time systems; parameter estimation; adaptive control; adaptive laws; closed-loop signal boundedness; controller parameterizations; inverse controller; nonlinearity inverses; output tracking; parameterized nonlinearities; unknown nonsmooth nonlinearities; Actuators; Adaptive control; Control nonlinearities; Control systems; Magnetic hysteresis; Nonlinear control systems; Nonlinear dynamical systems; Parameter estimation; Programmable control; Robust stability;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/9.536508

Filename

536508